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Science
Lawrence English, Adjunct Research Fellow, Griffith University

What's an LRAD? Explaining the 'sonic weapons' police use for crowd control and communication

United States Canberra Australia
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At vaccine mandate protests in Canberra last week, police used powerful loud-hailing devices called Long-Range Acoustic Devices (LRADs) to address protesters.

While some protesters claimed they were injured by the “sonic weapon”, those reports are inconsistent with what an LRAD can really do.

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